620044503510881 has 4 divisors (see below), whose sum is σ = 620063472690432. Its totient is φ = 620025534331332.

The previous prime is 620044503510869. The next prime is 620044503510893. The reversal of 620044503510881 is 188015305440026.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (620044503510869) and next prime (620044503510893).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620044503510881 is a prime.

It is a super-2 number, since 2×620044503510881² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620044503510811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9484540745 + ... + 9484606118.

It is an arithmetic number, because the mean of its divisors is an integer number (155015868172608).

Almost surely, 2^{620044503510881} is an apocalyptic number.

It is an amenable number.

620044503510881 is a deficient number, since it is larger than the sum of its proper divisors (18969179551).

620044503510881 is a wasteful number, since it uses less digits than its factorization.

620044503510881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18969179550.

The product of its (nonzero) digits is 921600, while the sum is 47.

The spelling of 620044503510881 in words is "six hundred twenty trillion, forty-four billion, five hundred three million, five hundred ten thousand, eight hundred eighty-one".